Men-yoroi (面鎧), also called menpō (面頬) or mengu (面具),[1][2][3] are various types of facial armour that were worn by the samurai class and their retainers in feudal Japan.
It had a lacquered or rusted type of finish and included a variety of facial details, such as a moustache, fierce teeth and a detachable nose.
Face armour in Japan begins with the happuri, which is depicted in Heian- and Kamakura-era yamato-e paintings[1] and is thought to have appeared during the 10th or 11th centuries.
By the 14th century, the hōate appears, and according to Tom Conlan,[8] this development is behind decreased facial wound statistics.
[7] Hōate are also portrayed in art and literature of the period, most notably the Aki no yo no Nagamonogatari scroll[10] and Taiheiki.